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- Question
What problem is solved by Dijkstra's banker's algorithm?
Options- A. mutual exclusion
- B. deadlock recovery
- C. deadlock avoidance
- D. cache coherence
- E. None of the above
- Correct Answer
- deadlock avoidance
ExplanationThe Banker's algorithm is a resource allocation & deadlock avoidance algorithm developed by Edsger Dijkstra that tests for safety by simulating the allocation of pre-determined maximum possible amounts of all resources, and then makes a "safe-state" check to test for possible deadlock conditions for all other pending activities, before deciding whether allocation should be allowed to continue. - 1. Operating system
Options- A. links a program with the subroutines it references
- B. provides a layered, user-friendly interface
- C. enables the programmer to draw a flowchart
- D. all of the above
- E. None of the above Discuss
- 2. Block caches or buffer caches are used
Options- A. to improve disk performance
- B. to handle interrupts
- C. to increase the capacity of the main memory
- D. to speed up main memory read operation
- E. None of the above Discuss
- 3. In which way(s) a macro processor for assembly language can be implemented:
Options- A. independent two-pass processor
- B. independent one-pass processor
- C. processor incorporated into pass 1 of a standard two-pass assembler
- D. all of the above
- E. None of the above Discuss
- 4. What is the name of the technique in which the operating system of a computer executes several programs concurrently by switching back and forth between them?
Options- A. Partitioning
- B. Multitasking
- C. Windowing
- D. Paging
- E. None of the above Discuss
- 5. Trojan-Horse programs
Options- A. are legitimate programs that allow unauthorized access
- B. do not usually work
- C. are hidden programs that do not show up on the system
- D. usually are immediately discovered
- E. None of the above Discuss
- 6. The function(s) of the Storage Assignment is (are)
Options- A. to assign storage to all variables referenced in the source program.
- B. to assign storage to all temporary locations that are necessary for intermediate results.
- C. to assign storage to literals, and to ensure that the storage is allocate and appropriate locations are initialized.
- D. all of the above
- E. None of the above Discuss
- 7. Which of the following is a type of systems software used on microcomputers?
Options- A. MS-DOS
- B. PC-DOS
- C. Unix
- D. All of the above
- E. None of the above Discuss
- 8. Producer consumer problem can be solved using
Options- A. semaphores
- B. event counters
- C. monitors
- D. all of the above
- E. None of the above Discuss
- 9. If the number of bits in a virtual address of a program is 16 and the page size is 0.5 K bytes, the number of pages in the virtual address space is
Options- A. 16
- B. 32
- C. 64
- D. 128
- E. None of the above Discuss
- 10. Software that measures, monitors, analyzes, and controls real-world events is called:
Options- A. system software
- B. real-time software
- C. scientific software
- D. business software
- E. None of the above Discuss
Operating Systems Concepts problems
Search Results
Correct Answer: provides a layered, user-friendly interface
Correct Answer: to improve disk performance
Correct Answer: all of the above
Correct Answer: Multitasking
Correct Answer: are legitimate programs that allow unauthorized access
Correct Answer: all of the above
Correct Answer: All of the above
Correct Answer: all of the above
Correct Answer: 128
Correct Answer: real-time software
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